Darlington, a Confederate 300 ton steamer, was captured by boats from in Cumberland Sound, Florida, 3 March 1862, with a cargo of army wagons, ammunition, and camp equipment on board.
She was taken over and, with a crew of 23 and one howitzer as armament, USS Darlington was employed by the Union Navy for use in the waters off Fernandina, Florida, and Port Royal, South Carolina, with Acting Master J. W. Godfrey in command.
Darlington assisted the boats of the side-wheel steamer and the in raising the yacht USS America in St. Johns River, Florida, from 18 to 25 March 1862.
She was transferred to the Union Army for use as a transport in September 1862.